Automatic application of lampblack to metal molds



April 28, 1925. 1,535,149

J. 1... DOSTAL AUTOMATIC APPLICATION OF'LAMPBLACK To METAL MQLDS Filed Sept. 27, 1922 2 Sheets-Sheet 1 c: JOSEPH Lou's Dosv-n 4 INVENTOR.

ll M

ATTORNEY.

Patented Apr. 28,1925.

UNITED STATES PATENT or FICE.

JOSEPH LOUIS DOSTAL, OF DETROIT, MICHIGAN, ASSIGNOR TO' EA RL HOLLEY, DETROIT, MICHIGAN.

AUTOMATIC A PP];I('JA'IllI( )l 1' OF LjllPBIi-ACK TO METAL LIOLDS.

Applicationfiled fieptember 27; 1922. ,Serial No. 590,913.

To all whom it may concern: p

Be it known that I, JOSEPH LOUIS DOS'I'AL, a citizen of the UnitedStates, residing at 8530 Dexter Ave, Detroit, in the county of Wayneand State of 'Michigan, have invented certain new and useful Improvements in the Automatic Application of Lampblack to MetalMolds, specification; 4

The-object of this invention is to provide means, for applying automatically a comparatively thick coating of lamp black so that the surfaces of the metal molds are well of. which the following is a protected with lamp black.

In carrying out the process described in the co-pend1ng application, Serial No. 579,927, filed August 5, 1922, by Daniel H. Meloche, it has been found necessary to provide more elaborate means than those shown in my co-pending application, Serial No. 568,405, filed June 15, 1922.

The specific problem to be solved was the application of lamp black to aseries of.

molds rotated in a horizontal plane. In order to get the requisite thick coat-ingas set forth in theapplication, Serial No. 579,927, referred to above I have found it necessary that the burner which produces the lamp black shouldbe arranged to travel AA with the molds during a portion of their travel and then by means of an escapement the burner is quickly and automatically returned to its original position where-it is picked up by the next succeeding molds and the operation repeated.

In the device shown in the application, Serial No. 568,405, referred to above the burner is stationary and the carbon is only deposited during the period that the mold is passing the burner. With. that device it was necessary to automatically open and shut the burner in order that the-consumption of gas should be economized. Owing to the-fact that with the device. which has now been developed the burner remains opposite the molds for the major portion-of the time it is no longer necessary to rovide- Figure III'isasection, at ri the mechanism, showing the en view of the mechanismtand also showing two of the molds.

Figure IV is a section through the burner. Figure V shows a cross sectional elevation on theplane 55 ofFigure II. Figure I shows three pairs of molds-K. The curved track A supports 'a carriage from which aburner is suspended.- B is an undulating track the purpose of which will be. described later. support the track A and the undulatin track or guide B. The carriage supporte by the four rollers O is shown travelling with the molds K. a

In Figures II and III AA are the rails or. track which are inclined as shown in Figure II. The. carriage is' shown riding on the rails and travelling back after being released from one mold. This carriage is providedwith wheels which ride on the upper portion of the. rails AA. These wheels are lettered C and the four lower wheels are lettered D. U is one of twoside rollers provided to reduce the friction on the device (see also Figure I) The'mechanismis thus held in all directions to the track or rails E is a roller which runs on the undulatin guide-track B. This roller E is connecte through the arm F and the shaft G to the carriage. The shaft G rotates in the bearings H. This shaft G provides a support for the tubeO which in its turn supports the burner-block P and the burners R. I is a-bar rigidly connected with the frame S of the carriage. This bar I engages with ht angles Q i Stationary supports W. I

the conical plug J which projects from the mold K. L is a flexible hose connection which allows gas to enter the hollow rod or tube N and so reach theburner block P and the burners B through. the tube 0.

M is the pivot block to which are connection ed thejinlet tub'eN and the outlet tube 0 andwhich in its-turn is connected to the rod G so that the tubes 0 and N oscillate with the rod G. X- is the central passage in the burner'block P; T are the branch connections leading to the burners R.

0pemtion.-Assuming that the machinery. is in operation and the gas flowing through the pipe L andthe tube N and the tube 0 to theburner block P, where the gas is burning as it-issu'es from the burners R, the

the open molds.

burner block P is carried with the moving molds K by reason of the projection J engaging with the arm I and thus moving the carriage with the molds K, the molds being automatically opened at this point to permit the burner block P to swing freely between As the molds burner block Pforward with them the roller E engages with the undulating track B mechanism to run down the inclined track 'A at the bottom of which it remains until it is picked up by the next succeeding mold and projection J, which in its turn engages with the arm I and again carries the burner with it, so that the burner is adapted to travel for a certain distance with each mold in succession and therefore, although the burner is continuously in operation, for the major portion of the time it is usefully employed in coating the molds with lampblack, thereby avoiding the necessity of alternatively opening and closing the valve controlling the gas which furnishes theglampblack.

The burner block P is provided with a central passage X leading to, the bottom of the burner and the upwardly extending passages -T which are connected to the burners B. By this means it has been found possible to obtain a uniform distribution of the gas, otherwise the gas all escapesfrom the upper burners and never reaches the lower burners. On the other hand care must be taken that the upper burners receive at least as much gas as the lower burners as the up 361 portion of the molds are subjected to t e heat of the incoming metal flowing to the lower portion of the molds.

.VVhat I claim is: I

1. In a molding machine an inclined stationary track, a series of molds arranged to be automatically opened when passing be- K carry the carriage and thethe whole neath said track, a carriage rolling on said track, a, burner suspended from said carriage, a pegprojectin from each of said molds, an arm exten ing from said carriage and engaging with said projection whereby the burner is carried forward with the mold, automatically released, returned and again carried forward by the next succeeding molds.

2. In a molding 'machine a, stationary track, a series of molds adapted to be automatically opened and to pass beneath said track, a carriage rolling on said track, a burner suspended from said carriage, mechanism interconnectlng said molds and sald carriage whereby the carriage and burner is carried forward with a pair of molds,

automatically released and returned and again carried forward by the next succeeding pair of molds.

3. In a molding machine a {stationary track, matically opened and to pass beneath said a series of molds adapted to be auto.-

track, a carriage rolling on said track, an

oscillating burnensuspended from said car riage, mechanism interconnecting said molds and said carriage whereby the car'- riage and burner is carried forward with a pair of molds, automatically released and returned and againcarried forward by the next succeeding pair of molds.

4. In a molding machine a stationary track, a series of molds adapted to be automatically opened and to pass beneath said track, a carriage rolling on said track,an undujlating track, arr osci'llatingburner suspended from a shaft supported on'bearings on said carriage, an arm connected to said shaft, a roller on the end of said arm, said roller being held in contact with said undulating track whereby the burner is oscillated when the carriage is moved on the said rail.

5. In a molding machine, a moving series of molds adapted to be automatically opened, a burner adapted to pass between and to deposit lamp black upon said opened molds, a movable support for said burner, means connecting the sup ort and each of said molds, whereby the urner is carried forward with each of said molds, automatically released and carried forward by the next succeeding mold:

In testimony whereof I aflix my signature.

JOSEPH LOUIS DOSTAL. 

